TY - GEN
T1 - Anticipated vs. experienced workload
T2 - 53rd Human Factors and Ergonomics Society Annual Meeting 2009, HFES 2009
AU - Sublette, M.
AU - Carswell, C. M.
AU - Grant, R.
AU - Klein, M.
AU - Seales, W. B.
AU - Clarke, D.
PY - 2009
Y1 - 2009
N2 - The NASA-TLX subjective workload assessment is typically used immediately following a participant's performance in an experimental task to assess the workload experienced. However, it is sometimes necessary to assess the anticipated workload of a task before the task is actually performed. This study compares the workload assessments of participants who performed two minimally invasive surgical training tasks to participants who only saw descriptions of the two tasks. Results showed that participants who were asked to rate the anticipated workload underestimated the overall workload required for the "cannulation" task, while overestimating the overall workload required for the rope task. Interactions between task type and condition also were found in three of the NASA-TLX subscales (mental demand, effort, and frustration). Overall, the reliability of participants' prediction of the difficulty depended on the task being evaluated and the particular measure of difficulty that was being assessed. In general, physical facets of workload appeared to be more accurately assessed than cognitive facets.
AB - The NASA-TLX subjective workload assessment is typically used immediately following a participant's performance in an experimental task to assess the workload experienced. However, it is sometimes necessary to assess the anticipated workload of a task before the task is actually performed. This study compares the workload assessments of participants who performed two minimally invasive surgical training tasks to participants who only saw descriptions of the two tasks. Results showed that participants who were asked to rate the anticipated workload underestimated the overall workload required for the "cannulation" task, while overestimating the overall workload required for the rope task. Interactions between task type and condition also were found in three of the NASA-TLX subscales (mental demand, effort, and frustration). Overall, the reliability of participants' prediction of the difficulty depended on the task being evaluated and the particular measure of difficulty that was being assessed. In general, physical facets of workload appeared to be more accurately assessed than cognitive facets.
UR - https://www.scopus.com/pages/publications/77951585941
UR - https://www.scopus.com/pages/publications/77951585941#tab=citedBy
U2 - 10.1518/107118109x12524443346158
DO - 10.1518/107118109x12524443346158
M3 - Conference contribution
AN - SCOPUS:77951585941
SN - 9781615676231
T3 - Proceedings of the Human Factors and Ergonomics Society
SP - 1383
EP - 1387
BT - 53rd Human Factors and Ergonomics Society Annual Meeting 2009, HFES 2009
Y2 - 19 October 2009 through 23 October 2009
ER -